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esp8266/modesp: Implement flash_read(offset, size_bytes) function.

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Based on vendor API documentation, untested on real hardware.
This commit is contained in:
Paul Sokolovsky 2015-11-24 23:28:20 +02:00
parent ff8c4188f4
commit 90202b4c0d
2 changed files with 17 additions and 0 deletions
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16
esp8266/modesp.c
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@ -27,6 +27,7 @@
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <errno.h>
#include "py/nlr.h"
#include "py/obj.h"
@ -569,6 +570,20 @@ STATIC mp_obj_t esp_flash_id() {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(esp_flash_id_obj, esp_flash_id);
STATIC mp_obj_t esp_flash_read(mp_obj_t offset_in, mp_obj_t len_in) {
mp_int_t offset = mp_obj_get_int(offset_in);
mp_int_t len = mp_obj_get_int(len_in);
byte *buf = m_new(byte, len);
// We know that allocation will be 4-byte aligned for sure
SpiFlashOpResult res = spi_flash_read(offset, (uint32_t*)buf, len);
if (res == SPI_FLASH_RESULT_OK) {
return mp_obj_new_bytes(buf, len);
}
m_del(byte, buf, len);
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(res == SPI_FLASH_RESULT_TIMEOUT ? ETIMEDOUT : EIO)));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(esp_flash_read_obj, esp_flash_read);
STATIC const mp_map_elem_t esp_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_esp) },
@ -579,6 +594,7 @@ STATIC const mp_map_elem_t esp_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_sleep_type), (mp_obj_t)&esp_sleep_type_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_deepsleep), (mp_obj_t)&esp_deepsleep_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_flash_id), (mp_obj_t)&esp_flash_id_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_flash_read), (mp_obj_t)&esp_flash_read_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_socket), (mp_obj_t)&esp_socket_type },
#if MODESP_INCLUDE_CONSTANTS

1
esp8266/qstrdefsport.h
View File

@ -64,6 +64,7 @@ Q(adc)
Q(vdd33)
Q(chip_id)
Q(flash_id)
Q(flash_read)
Q(sdk_version)
Q(mac)
Q(getaddrinfo)